Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Que data o South Melbourne jogou como time visitante?
 ###Tabelas: CREATE TABLE round_18 (round_18_id AUTO_INCREMENT PRIMARY KEY, Home team VARCHAR, Home team score VARCHAR, Away team VARCHAR, Away team score VARCHAR, Venue VARCHAR, Crowd INT, Date VARCHAR) CREATE TABLE career_points_leaders (career_points_leaders_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Years VARCHAR, Goals INT, Assists INT, Points INT) CREATE TABLE popular_languages_used_for_data_exchange (popular_languages_used_for_data_exchange_id AUTO_INCREMENT PRIMARY KEY, Schemas VARCHAR, Flexible VARCHAR, Semantic verification VARCHAR, Dictionary VARCHAR, Information Model VARCHAR, Synonyms and homonyms VARCHAR, Dialecting VARCHAR, Web standard VARCHAR, Transformations VARCHAR, Lightweight VARCHAR, Human readable VARCHAR) CREATE TABLE season_2006 (season_2006_id AUTO_INCREMENT PRIMARY KEY, Position INT, Club VARCHAR, Played INT, H-Win INT, H-Draw INT, A-Win INT, A-Draw INT, Lost INT, Def. INT, Pts For INT, Pts Agst INT, Pair INT, Long INT, Points INT, Average VARCHAR) CREATE TABLE fed_cup_results_10–8 (fed_cup_results_10–8_id AUTO_INCREMENT PRIMARY KEY, Year INT, Edition VARCHAR, Round VARCHAR, Date VARCHAR, Location VARCHAR, Surface VARCHAR, Against VARCHAR, Opponent(s) VARCHAR, Score VARCHAR, Result VARCHAR)  
SELECT Date FROM round_18 WHERE Away team = south melbourne